Protection Of Satellite Infrared Experiment (SIRE) Cryogenic Infrared (IR) Optics In Shuttle Orbiter

Andrew Guttman; Robert D. Furber; E. P. Muntz

doi:10.1117/12.958460

5 August 1980 Protection Of Satellite Infrared Experiment (SIRE) Cryogenic Infrared (IR) Optics In Shuttle Orbiter

Andrew Guttman, Robert D. Furber, E. P. Muntz

Proceedings Volume 0216, Optics in Adverse Environments II; (1980) https://doi.org/10.1117/12.958460
Event: 1980 Los Angeles Technical Symposium, 1980, Los Angeles, United States

Abstract

The SIRE sensor is scheduled for use in orbital experiments aboard the Shuttle Orbiter vehicle during 1983. Sources of gas phase contaminants and how they affect the cryogenic optics have been studied and the results are summarized in this paper. A helium gas purging system has been designed on the basis of ion beam experiments carried out in the laboratory. Flow rates on the order of 10^-4 grams/second are indicated for orbital altitudes of about 250 n. mi. Analytical computations that include the effects of the detailed scattering geometry indicate the need for higher purge gas flow rates than those based on the laboratory data.

Citation Download Citation

Andrew Guttman, Robert D. Furber, and E. P. Muntz "Protection Of Satellite Infrared Experiment (SIRE) Cryogenic Infrared (IR) Optics In Shuttle Orbiter", Proc. SPIE 0216, Optics in Adverse Environments II, (5 August 1980); https://doi.org/10.1117/12.958460

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